| Kiu | A name meaning a hill or high ground. |
| Kiwako | A name meaning a child of the season. |
| Kiyle | Narrow, a sound, a strait |
| Kizzie | A name meaning cinnamon or spice tree. |
| Kjetil | Norse name, meaning ruler of the people |
| Kla Han | A name meaning a brave, bold warrior. |
| Klair | A name meaning bright and clear light. |
| Klaire | A name meaning bright and clear. |
| Klairi | A name meaning bright and famous. |
| Klancy | A name meaning redhaired fighter. |
| Klaretta | A name meaning bright and pure. |
| Klarice | A name meaning clear and bright. |
| Klarina | A name meaning bright and famous. |
| Klark | A name meaning scholar or clerk. |
| Klarybel | A name meaning bright and fair. |
| Klaryce | A name meaning clear and bright. |
| Klaryssa | A name meaning bright and famous. |
| Klaudija | Derived from the Roman name Claudius. |
| Klaudja | A variant form of the name Claudia. |
| Klayre | Meaning bright, clear, or famous. |
| Klea | Derived from the Greek word for glory. |
| Kleena | Princess of the Sea |
| Klein | German surname, meaning small or little |
| Kleiner | A surname meaning the small one. |
| Klelia | A name of ancient Roman origin. |
| Klementijna | Meaning mild, merciful, or gentle. |
| Klementina | A name meaning mild and merciful. |
| Klementos | Derived from the word for merciful. |
| Kliara | A variant spelling meaning bright. |
| Kline | Derived from German, means 'slender' or 'tall' |
| Klinten | Derived from the word for a cliff. |
| Klothilde | Renowned Battle |
| Klotild | A name meaning famous in battle. |
| Klotilda | Renowned Battle |
| Klytie | Named after a famous sea nymph. |
| Knoah | A variation meaning peaceful rest. |
| Knowlton | English surname, means 'knowing town' or 'wise settlement' |
| Knowshon | Derived from Hebrew, means 'God's gift' or 'gift from God' |
| Knupreet | One who loves the divine spirit. |
| Koba | Japanese name, means 'small, strong, and brave' |